<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>L PLAYGROUND2</title>
</head>
<body>
<h1>Hello user: {{ content }}</h1>
<a id="door" href="javascript:void(0);" onclick="send_request(this)">点击打开新世界的大门</a>
<script src="/static/js/jquery.js"></script>
</body>
</html>